str = 'day day up'
for i in range(len(str)):
    print(str[i],end=" ")

list1 = []
#list1[0] = 1
#list1[1] = 2
list1.append(3)
list1.append(4)
list1.append(5)
print(list1)

list2 = [1,2,3]

list3 = list();
list3.append(1)
list3.append(2)
list3.append(3)
print(list3)

list2 = [1,2,3]
for i in list2:
    print(i)
list2.insert(1,10)
print(list2)
list2.extend([11,12])
print(list2)
list2.sort(reverse=True) #默认降序
print('----------------------')

list3 = sorted(list2)
print(list2)
print(list3)

list4=[1,3,5,7,9]

#1~10
list5 = [i**2 for i in range(1,10) if i%2 !=0]
print(list5)

str = ('1111',)#元组
print(type(str))

List1 = set([1,2,3,4,5,6,7,8,9])

dict1={1}
print(type(dict1))